Samsung Galaxy S3 -> USB OTG -> M2Tech HiFace DAC -> RSA Predator Line In -> AMAZING!!! OK, it looks like I've found my audiophile nirvana: today I got my hands on the M2Tech HiFace 384 kHZ/32 Bit USB DAC. First things firs: I am here to report compatibility of Galaxy S3 (Stock Kernel, non-rooted) via USB OTG with HiFace DAC, both directly (using any player software), but of course capped to 16bit/48kHz content, and via UARP, effortlessly streaming up to 24/192: But probably even more importantly, I am happy to report (almost) perfect compatibility with Sony Xperia Sola via USB OTG with UARP but without USB hub!!! Now, why, would you wonder, is it (almost) perfect? Well, here's the bad news: I occasionally here unpleasant clicks fed into the sound, when using M2Tech HiFace DAC with Xperia Sola (both driven directly, and, out of curiosity, via a non-powered USB hub). My wild guess is that the device consumes just about the maximum Sola can provide in OTG mode. I will need to check this theory by trying to use HiFace DAC with powered hub, but I don't have one at hand right now. Note that I am not hearing these clicks when using with Samsung Galaxy S3, which apparently has a beefier USB OTG power cirquitry. Nor I hear any unwanted clicks with HiFace out of a PC USB Port. Apart from this - man, this thing is gorgeous!!! I will not go into detailed SQ description here, as this is slightly off-topic, but it really does a fantastic job! As if it wasn't already enough, this baby is a portable hifier's dream: just look how neatly it fits my RSA Predator's side wall - they were ment to go together, no less! ))) Icing on the cake: of course, I could not resist, and tested HiFace DAC with my PC. Note that a special driver is required, available at M2Tech web site. I connected HiFace DAC to my Laconic HA-04AF tube headphone amp... and bingo! Stereo DXD 24/352.8 in its shimmering beauty! I am happy man!